Gas flow regulating device

Abstract

The gas flow regulating device of the present invention comprises a housing, wherein a blade damper is provided in the bottom air inlet of the housing, the blade damper comprising a first rotating shaft, on which damper blades for closing the bottom air inlet are mounted, and the first rotating shaft controls the air intake of the bottom air inlet by driving the damper blades to rotate; a baffle is provided on the inner side wall of the housing, and a second rotating shaft is used to drive the baffle to slide relative to the inner side wall of the housing; a horizontal gear is mounted on the first rotating shaft, and a vertical gear is mounted on the second rotating shaft, and the horizontal gear and the vertical gear are engaged so that the first rotating shaft and the second rotating shaft rotate synchronously. The gas flow regulating device of the present invention solves the problem of high-precision proportional distribution of air volume and can realize proportional adjustment of the air volume of two routes. When the air volume of one route increases, the air volume of the other route decreases by the same proportion while keeping the total air volume unchanged.

Description

Technical Field

[0001] The present invention relates to the field of ventilation, and in particular to a gas flow regulating device. Background Art

[0002] Gas flow control devices are widely used in test and measurement instruments for ventilation systems and play a key role in ventilation systems. Gas flow control devices can be manually adjusted or electronically controlled, with the main difference being whether they rely on a handle or a motor for control.

[0003] Both manual and electronic control methods suffer from poor adjustment accuracy. This is especially true when distributing air volume across two channels. When increasing one channel, the other cannot be accurately reduced to maintain the same total air volume. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a gas flow regulating device which can achieve proportional regulation of the air volumes of two paths.

[0005] The gas flow regulating device of the present invention comprises a housing, wherein a bottom air inlet is provided on the bottom wall of the housing, a side air inlet is provided on the side wall of the housing, and an air outlet is provided on the top wall of the housing;

[0006] A blade damper is provided in the bottom air inlet, and the blade damper includes an outer frame mounted on the side wall of the bottom air inlet and a first rotating shaft mounted on the outer frame, the first rotating shaft being perpendicular to the axis of the outer frame, and damper blades for closing the bottom air inlet are mounted on the first rotating shaft, and the first rotating shaft controls the air intake of the bottom air inlet by driving the damper blades to rotate;

[0007] A baffle for closing the side air inlet is provided on the inner side wall of the housing, and the baffle is connected to a second rotating shaft, and the second rotating shaft is used to drive the baffle to slide relative to the inner side wall of the housing, so that the baffle closes or opens the side air inlet, thereby controlling the air intake of the side air inlet;

[0008] The first rotating shaft is perpendicular to the second rotating shaft. A horizontal gear is installed on the first rotating shaft, and a vertical gear is installed on the second rotating shaft. The horizontal gear is meshed with the vertical gear to make the first rotating shaft and the second rotating shaft rotate synchronously.

[0009] The gas flow regulating device of the present invention is provided with four side air inlets on the inner side wall of the shell, and the four side air inlets are evenly distributed circumferentially on the inner side wall of the shell. There are four baffles, and the four baffles correspond to the four side air inlets one by one. The second rotating shaft is located in the middle of the four baffles, and the four baffles are respectively connected to the second rotating shaft through connecting arms, so that the second rotating shaft drives the four baffles to slide synchronously relative to the inner side wall of the shell.

[0010] The gas flow regulating device of the present invention further includes a driving shaft rotatably arranged outside the shell, one end of the first rotating shaft is installed with a transmission horizontal gear, and one end of the driving shaft is installed with a driving vertical gear, and the transmission horizontal gear is engaged with the driving vertical gear so that the driving shaft drives the first rotating shaft to rotate.

[0011] The gas flow regulating device of the present invention is characterized in that a handle or a motor for driving the driving shaft to rotate is installed at the other end of the driving shaft.

[0012] The gas flow regulating device of the present invention is characterized in that a scale plate is installed on the driving shaft, and the scale plate is used to mark the rotation angle of the driving shaft.

[0013] In the gas flow regulating device of the present invention, a potentiometer is installed on the driving shaft, and the potentiometer is used to detect the rotation angle of the damper blade and transmit the data of the rotation angle.

[0014] The gas flow regulating device of the present invention comprises four damper blades, each of which is in the shape of a right-angle fan.

[0015] The gas flow regulating device of the present invention is characterized in that a mesh cover for shielding the side air inlet is provided on the outside of the shell.

[0016] The gas flow regulating device of the present invention solves the problem of high-precision proportional distribution of air volume and can realize proportional regulation of the air volume of two paths. When the air volume of one path increases, the air volume of the other path decreases in the same proportion while keeping the total air volume unchanged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A front view of a schematic structural diagram of a gas flow regulating device according to the present invention;

[0018] Figure 2 A top view of a schematic structural diagram of a gas flow regulating device according to the present invention;

[0019] Figure 3 This is a schematic diagram of the gear transmission when the blade damper is fully open, showing the structure of the reversing gear;

[0020] Figure 4This is a schematic diagram of the gear transmission when the blade damper is fully closed;

[0021] Figure 5 Schematic diagram of the structure of the damper blade;

[0022] Figure 6 It is a front view of the structural diagram of the mesh cover;

[0023] Figure 7 A top view of a schematic structural diagram of a mesh cover;

[0024] Figure 8 It is a front view of the structural schematic diagram of the shell;

[0025] Figure 9 It is a top view of the structural schematic diagram of the shell. DETAILED DESCRIPTION

[0026] like Figure 1 、 Figure 2 、 Figure 8 、 Figure 9 As shown, the gas flow regulating device of the present invention comprises a housing 1, a bottom air inlet 2 is provided on the bottom wall of the housing 1, a side air inlet 3 is provided on the side wall of the housing 1, and an air outlet 4 is provided on the top wall of the housing 1;

[0027] A blade damper is provided in the bottom air inlet. The blade damper includes an outer frame 5 mounted on the side wall of the bottom air inlet 2 and a first rotating shaft 11 mounted on the outer frame. The first rotating shaft is perpendicular to the axis of the outer frame. The damper blades 6 for closing the bottom air inlet are mounted on the first rotating shaft. The first rotating shaft controls the air flow into the bottom air inlet by driving the damper blades to rotate.

[0028] A baffle 7 for closing the side air inlet is provided on the inner side wall of the housing. The baffle 7 is connected to a second rotating shaft 12. The second rotating shaft is used to drive the baffle to slide relative to the inner side wall of the housing to close or open the side air inlet, thereby controlling the air intake of the side air inlet.

[0029] The first rotating shaft 11 is perpendicular to the second rotating shaft 12 . A horizontal gear 13 is mounted on the first rotating shaft 11 , and a vertical gear 14 is mounted on the second rotating shaft 12 . The horizontal gear and the vertical gear are engaged with each other, so that the first rotating shaft and the second rotating shaft rotate synchronously.

[0030] Combine Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7As shown, the gas flow regulating device of the present invention is provided with four side air inlets 3 on the inner side wall of the shell, and the four side air inlets are evenly distributed circumferentially on the inner side wall of the shell. There are four baffles 7, and the four baffles correspond to the four side air inlets one by one. The second rotating shaft is located in the middle of the four baffles, and the four baffles are respectively connected to the second rotating shaft through connecting arms 40, so that the second rotating shaft drives the four baffles to slide synchronously relative to the inner side wall of the shell.

[0031] The gas flow regulating device of the present invention further includes a driving shaft 30 rotatably arranged outside the housing, a transmission horizontal gear 31 is installed at one end of the first rotating shaft, and a driving vertical gear 32 is installed at one end of the driving shaft. The transmission horizontal gear is engaged with the driving vertical gear so that the driving shaft drives the first rotating shaft to rotate.

[0032] In the gas flow regulating device of the present invention, a handle 50 or a motor for driving the driving shaft to rotate is installed at the other end of the driving shaft.

[0033] In the gas flow regulating device of the present invention, a scale plate 8 is installed on the driving shaft, and the scale plate is used to mark the rotation angle of the driving shaft.

[0034] In the gas flow regulating device of the present invention, a potentiometer 9 is installed on the driving shaft, and the potentiometer is used to detect the rotation angle of the damper blade and transmit the data of the rotation angle.

[0035] In the gas flow regulating device of the present invention, there are four damper blades 6, each of which is in the shape of a right-angled fan.

[0036] In the gas flow regulating device of the present invention, a mesh cover 10 for shielding the side air inlet 3 is provided on the outside of the housing 1 .

[0037] The gas flow regulating device of the present invention solves the problem of high-precision proportional distribution of air volume and can realize proportional regulation of the air volume of two paths. When the air volume of one path increases, the air volume of the other path decreases in the same proportion while keeping the total air volume unchanged.

[0038] The gas flow control device of the present invention has an overall cylindrical structure, with a mesh screen on the outer ring of the device and a housing and baffle on the inner ring, together forming a side air inlet channel. A blade damper at the bottom of the device forms a bottom air inlet channel, and the two streams of air converge within the housing and are discharged upward. The gas flow control device of the present invention has a compact structure. The side baffle and bottom damper blades rotate synchronously via a drive shaft and transmission gears, achieving a coordinated and matched proportional distribution of the two streams of air. By appropriately designing the blade area, baffle area, and mesh screen density, the total air volume can be maintained constant during the air volume proportional adjustment process.

[0039] The potentiometer is used to detect the rotation angle of the damper blade and transmit the rotation angle data; the dial is used to indicate the damper opening to facilitate manual operation; the motor is used to drive the various transmission shafts and transmission gears to achieve electronic control of the air volume.

[0040] The gas flow regulating device of the present invention utilizes two sets of reversing transmission gear structures to realize synchronous rotation of the vertical handle, the transverse blade damper, and the vertical baffle, thereby realizing coordinated distribution of the side and bottom air volumes.

[0041] The damper blades of the gas flow regulating device of the present invention include four evenly symmetrical blades, each of which has a rotation axis parallel to the bottom surface of the housing. When the damper blades are parallel to the bottom surface, the damper is in a fully closed state (damper opening 0%), and when they are perpendicular to the bottom surface, the damper is in a fully open state (damper opening 100%).

[0042] The gas flow regulating device of the present invention designs the side dampers into a pull-out window structure, with four evenly symmetrical "windows" opened on the outer shell. Four corresponding baffles are designed on the inner side of the outer shell. The four baffles are an axisymmetric structure as a whole, and move along a central vertical drive shaft. When the baffles cover the windows, the side is fully closed; when the baffles are moved away and do not cover the windows, the side is fully open. When the bottom and side air volume ratio needs to be adjusted, a motor (or handle) and two sets of reversing transmission gears are used to rotate the damper blades and slide the side baffles. When the bottom damper opening increases, the air volume flowing through the bottom air duct increases, while the side baffles also block the windows more, and the air volume flowing through the side air duct decreases in the same proportion. The blade area, baffle (window) area, and mesh density (the mesh acts as a filter and can also adjust the flow resistance) are designed to match each other to ensure that the total air volume remains unchanged during the air volume ratio adjustment process.

[0043] The gas flow regulating device of the present invention designs the motor (handle), dial and potentiometer into a coaxial structure, and realizes the scale display of the air door opening and the signal transmission function when adjusting the air volume by coaxial rotation.

[0044] The gas flow regulating device of the present invention has an overall compact structure: the overall structure of the device is cylindrical, the mesh cover is on the outer ring of the device, the outer shell and the baffle are on the inner ring of the device, together forming a side air inlet channel, and the blade damper at the bottom of the device forms a bottom air inlet channel, and the two parts of wind converge inside the outer shell and are discharged upward.

[0045] The gas flow regulating device of the present invention utilizes a reversing gear to achieve synchronous matching of the bottom and side air volumes: the side baffles and the bottom damper blades are caused to rotate synchronously through the action of a transmission shaft and a transmission gear, thereby achieving a coordinated and matched proportional distribution of the air volumes of the two parts. By designing appropriate blade areas, baffle (window) areas, and mesh cover density, the total air volume can be ensured to remain unchanged during the air volume ratio adjustment process.

[0046] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A gas flow regulating device, characterized in that: The housing comprises a bottom air inlet on the bottom wall of the housing, a side air inlet on the side wall of the housing, and an air outlet on the top wall of the housing; A blade damper is provided in the bottom air inlet, and the blade damper includes an outer frame mounted on the side wall of the bottom air inlet and a first rotating shaft mounted on the outer frame, the first rotating shaft being perpendicular to the axis of the outer frame, damper blades for closing the bottom air inlet being mounted on the first rotating shaft, and the first rotating shaft controls the air intake of the bottom air inlet by driving the damper blades to rotate; the number of the damper blades is four; A baffle for closing the side air inlet is provided on the inner side wall of the housing, and the baffle is connected to a second rotating shaft, and the second rotating shaft is used to drive the baffle to slide relative to the inner side wall of the housing, so that the baffle closes or opens the side air inlet, thereby controlling the air intake of the side air inlet; The first rotating shaft is perpendicular to the second rotating shaft. A horizontal gear is installed on the first rotating shaft, and a vertical gear is installed on the second rotating shaft. The horizontal gear meshes with the vertical gear to make the first rotating shaft and the second rotating shaft rotate synchronously, thereby achieving coordinated distribution of air volume on the side and bottom surfaces. Four side air inlets are provided on the inner side wall of the shell, and the four side air inlets are evenly distributed circumferentially on the inner side wall of the shell. There are four baffles, and the four baffles correspond to the four side air inlets one by one. The second rotating shaft is located in the middle of the four baffles, and the four baffles are respectively connected to the second rotating shaft through connecting arms, so that the second rotating shaft drives the four baffles to slide synchronously relative to the inner side wall of the shell; It also includes a driving shaft rotatably disposed outside the housing, wherein a transmission horizontal gear is mounted on one end of the first rotating shaft, and a driving vertical gear is mounted on one end of the driving shaft, wherein the transmission horizontal gear meshes with the driving vertical gear so that the driving shaft drives the first rotating shaft to rotate; A scale plate is mounted on the driving shaft, and the scale plate is used to mark the rotation angle of the driving shaft; A potentiometer is installed on the driving shaft, and the potentiometer is used to detect the rotation angle of the damper blade and transmit the data of the rotation angle; The other end of the driving shaft is equipped with a handle or a motor for driving the driving shaft to rotate; The handle or motor, the dial, and the potentiometer are coaxially arranged; The gas flow regulating device has an overall cylindrical structure.

2. The gas flow regulating device according to claim 1, wherein: Each damper blade is a right-angle fan.

3. The gas flow regulating device according to claim 1, wherein: The outside of the shell is provided with a mesh cover for shielding the side air inlet.

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